Astronomy current events question: planet-forming disks around protostars

Astronomy 210L, spring semester 2020
Cuesta College, San Luis Obispo, CA

Students are assigned to read online articles on current astronomy events, and take a short current events quiz during the first 10 minutes of lab. (This motivates students to show up promptly to lab, as the time cut-off for the quiz is strictly enforced!)

Valeria Foncea, Iris Nijman, Bárbara Ferreira, and Masaaki Hiramatsu, "How Newborn Stars Prepare for the Birth of Planets" (February 20, 2020)
almaobservatory.org/en/press-release/how-newborn-stars-prepare-for-the-birth-of-planets/

The Atacama Large Millimeter/submillimeter Array and Very Large Array radio telescopes made detailed images of ___________ forming around infant stars.
(A) dark matter.
(B) protoplanets.
(C) cosmic strings.
(D) supernovae remnants.
(E) cosmic background radiation.

Correct answer: (B)

Student responses
Sections 30679, 30680
(A) : 0 students
(B) : 23 students
(C) : 4 students
(D) : 2 students
(E) : 2 students